Firing mechanism for automatic firearms.



P. MA'USER, DECD. M. J. MAUSER M. A. SCHNEIDER. M. M. MAUSER. M. MAUSER, A. w. SCHNEIDER, L. DENK & A. MAUSER, HEIRS. FIRING MECHANISM FOR AUTOMATIC FIREARMS. APPLICATION FILED DEC. 14. 1912.

1,150,61 1 Patented A110. 17,1915.

' Invento per (M /M:'M/ Q5. 'KLM' @u/ma M m Attorney/j PAUL MAU'SER, E OBERNDORF-ON-THE-NECKAR, GERMANY; MARIA JULIE MAUSER,

MARIA. AGNES SCHNEIDER, MARIA MAGDALENA MAUSER, MAX WILHELMINE SCHNEIDER, LEON IE DENK, AND ALEXIUS MAUSER,

PAUL MAUSER, DECEASED.

FIRING MECHANISM Lifilhfilll.

Application filed December 14, 1912.

To all vi /1.0m. it may concern Be it known that I, PAUL MAUsnn, a subject of the King of \Vurttemberg, residing at Oberndorf-on-the-Neckar, in the Kingdom of urttemberg, German Empire, have invented certain new and useful Improvements in Firing Mechanism for Automatic Firearms, of which the following is a specification.

The invention relates to firing mechanism for self-loading firearms in which'the breech block is guided on the breech frame, its ob ject being to hold the sear in the engaged position during the engagement of the firing pin so that the firing pin is prevented from being accidentally released owing to shocks or vibrations. Vith this object in accordance with the present invention one of the lateral guiding ribs of the breech block is utilized, owing to the fact that the sear is provided with a lateral projection extending into the path of the rib so that the sear can be held by the rib in the engaged position during the engagement of the firing pin. The rib is provided with two recesses in order to permit the downward movement of the scar on firing and the upward movement of same when the breech block is in its rearward position.

The invention is illustrated in the accom iianying drawing in which:

Figure 1 shows a pistol in side elevation with tlie breech block partly broken away. Fig. 2 is avertical cross section on the line AA in Fig. 1 viewed from the front. Fig. 3 is an elevation of the weapon corresponding to Fig. showing the breech block in its recoiled position and the firing pin engaged by the sear. "Fig. 4 is a vertical cross section corresponding to Fig. 2, with the parts in the same position as in Fig. 3. Figs. 5, (3 and 7 illustrate respectively a side elevation, a rear elevation and a plan view of the sear.

Specification of Letters Patent.

TATS PATENT OFFICE.

USER, ANNA IRS OF SAID FOR AUTOMATIC FIREARMS.

PatentedAug. 17, 1915.

Serial No. 735,975.

The sear a, which in the form of a twoarmed lever is rotatably mounted laterally on the breech frame in the known manner, is provided below the firing pin retaining tooth a with a recess a which is adapted to be engaged by one of the ribs 41 of the breech block 7) which serve for guiding the breech block in corresponding grooves g in the breech frame. This rib v is provided with two recesses o v owing to which it'is possible for the sear a to move downward when the breech block is in its forward position and upward when the breech block is in its rearward position. When the breech block moves forward after the recoil the rib 'v engages the recess a so that the sear a is positively held in engagement with the firing pin (Fig. 3).

What I claim as myinvention and desire to secure by Letters Patent is:

.1. In an automatic firearm the combination of a breech block, a breech frame, lateral grooves in said breech frame, lateral ribs grooves, a firing pin, a sear, and a recess in said sear adapted to be engaged by one of said ribs to hold said sear in engagement with said firing pin.

2. In an automatic firearm the combination of a breech block, a breech frame, lateral grooves in said breech frame, lateral ribs in said breech block guided in said grooves, a firing pin, a scar, and a recess in said sear corresponding with one of said grooves and adapted to be engaged by one of said ribs to hold said sear in engagement with said firing pin.

In testimony whereof I have afiixed my signature in presence of two witnesses.

FRIEDRICH EICHHORN, ERNEST ENTENMANN.

in said breech block guided in said 

